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Merit Index for Gas-Cooled Reactor Heat Transfer

G. Melese-d’Hospital

Nuclear Science and Engineering / Volume 50 / Number 1 / Pages 83-85

January 1973

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A simple merit index has been derived to compare potential improvements in gas-cooled nuclear reactor cores, such as artificial surface roughening of the fuel rods. For given pumping-to-thermal power ratio, the core output per unit heat transfer area is proportional to the merit index (N3/ƒ)1/2. Stanton number, or dimensionless surface heat transfer coefficient, is Ns, and f is the friction factor.

 
 
 
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